An early signature look of Ariana's, the floral-print dress that made waves in the '50s was a favorite of the pop star's. In this picture from 1955, one of Ariana's style icons, Audrey Hepburn, dons a sunny selection that Ari probably has sitting in her closet. 

Ahead of dropping her smash single "Problem," Ariana teased her new style inspiration with a '60s mod go-go girl look. We can pinpoint her muse from this classic shot of Brigitte Bardot, a sex symbol of the '50s and '60s when the mod look and go-go girls were the cat's pajamas.

Jackie Kennedy was arguably the most stylish First Lady ever, and her elegance is still remembered today. With a look that pays homage to the '50s and '60s, Ariana would be committing a fashion crime to not pay tribute Jackie O on occasion. Several looks embrace touches from the icon's wardrobe, but we think this wintry look is particularly uncanny.

Ariana's silly, sci-fi "Break Free" video was an homage to 1968 cult classic Barbarella. The singer/actress did justice to Jane Fonda's sparkly, sci-fi look while also adding a dash of current sexiness.

The high boots, the patterned shift dress, the tousled locks: Ariana has essentially been a modern-day Nancy Sinatra lately. The 21-year-old has shown love to the "Boots Are Made for Walkin'" singer on her Instagram, too.

In her "Problem" video, Ari not only rocks the go-go look, but also embraces the role of the '60s sweetheart with a puffy, off-the-shoulder sweater like the ones donned by Jane Fonda and other bombshells of the time.

Ariana got her first taste of superstardom in 2010 co-starring on the Nickelodeon sitcom Victorious, which led to 2013's Sam & Cat. While her Nick days are on hiatus (S&C was cancelled after one seasons due to internal issues), she still paid homage to the network at the 2014 Kids Choice Awards with a Chanel purse decorated with some of Nickelodeon's most beloved characters.

It's not a Nickelodeon character, but we spot another cartoon influencing Ariana here. Ari had her diva moment at the 2013 American Music Awards last winter in this sultry, smoking red dress. She was serving major Jessica Rabbit, making it one of the standout moments of the show and solidifying her among this generation's batch of rising sirens.

For her "Right There" music video, the starlet threw a Halloween masquerade ball complete with a full-on homage to the Victorian era. There's puffy dresses, tight-laced corsets and frilly fans, all markings of a truly regal Victorian woman. Nailed it again, Ariana.

For this dress she wore in 2011, Ariana served us a little '20s flapper that reminds us of looks donned by silent film actress Norma Shearer. 

Much has been made about Ari sounding like a mini-Mariah Carey. And the singer probably didn't do much to differentiate herself from the singer with this look from her "Baby I" video. Ariana worked a tank top/jean shorts combo extremely reminiscent to the one Mimi rocked in "Fantasy." 

Before she had a hit TV show and a No. 1 album, Ari had a role in the Broadway show 13 that ran in New York from 2008 to 2009. Her theatrical side remained, and when she first began hitting the red carpet, the singer/actress favored bows in her hair reminiscent to looks sported by a young Judy Garland, one of the biggest musical stars of all time.

A pop star dressed like a cheerleader is nothing new, but Ariana made this look fresh by adding a touch of vintage to her and her backup dancers' outfits. The simple lettering, skirt cutout and bold colors remind us of how footballers and cheerleaders were outfitted in the '60s, just like these 1964 Upsala College kids.

While we don't think Ariana was looking to channel an Olympic figure skater for this performance last winter, we do see a similarity to one of Michelle Kwan's leotards! Both gals wear bold, sparkly pieces that are easy to move in whether you're shaking your hips or going for a double axel. 10s all around.

It was the year 1960 when the "Itsy Bitsy Teenie Weenie Yellow Polka Dot Bikini" song swept the country. The design has stayed in vogue for years, but this adorable, baby doll dress Ariana wore last fall screams '60s.

Growing up, Ariana said she took inspiration from the quirky, eccentric closet belonging to the renowned actress. "I was like a mini-Helena Bonham Carter," she said. Which is probably why she looked so good starring as a goth student in the video for "Popular Song," her collabo with Mika.